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A tuning fork vibrating at 517 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork when waves with a frequency of 485 Hz reach the release point? Take the speed of sound in air to be 340 m/s.
A girl is floating in a freshwater lake with her head just above the water. If she weighs 610 N, what is the volume of the submerged part of her body?
100.0 W tungsten filament bulb generates 95.0 W of heat, determine difference in temp. between inner and outer surface of glass
A skier (m = 63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. Find the skier's total kinetic energy as she reaches the ground
Positive pressure is used in blood transfusions. Suppose a container of blood is placed 1m above a vein where the venous pressure is 0.3 kPa
A toaster uses a Nichrome heating wire. When the toaster is turnedon at 20° C, the initial current is 1.50 A. A few secondslater, the toaster warms up and the current now has a value of 1.28A.
What force does the water exert on the man. explain how far does the tongue reach.
Ball 1, with a mass of 120g and traveling at 15m/s , collides head on with ball 2, which has a mass of 330g and is initially at rest. What are the final velocities of each ball if the collision is perfectly inelastic? (Vfx)1? (Vfx)2
A block of mass m1 = 6.67 kg on a frictionless plane inclined at angle ? = 33.6° is connected by a cord over a massless, What is the acceleration of the hanging block
a jet flying at 110 ms banks to make a horizontal circular turn. the radius of the turn is 3810 m and the mass of the
the pressure att he depth of 1.25 m in a tank of liquid is measured to be 125.5 kpa. the tank is open to the outside
if a charge particle move in a straight line and there no other forces on it except possibly from a magnetic field can
Based on this information and what you learned in this chapter about the action potential, estimate the total number of sodium ion channels in the membrane of a nerve cell
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